I can't figure out what im doing wrong, no matter what i do my turtles shell just keeps getting worse, i condition the water he has a heater and a heat/uvb lamp, also has a water fall filter and live plants! I make him bask for 2 hours a day because he doesn't like to bask alot on his own and his shell is still getting worse! Does he have a fungus is it the water? Is he shedding! Help! I just want him to be healthy!